withr (version 2.1.0)

with_sink: Output redirection

Description

Temporarily divert output to a file via sink(). For sinks of type message, an error is raised if such a sink is already active.

Usage

with_output_sink(new, code, append = FALSE, split = FALSE)
local_output_sink(new, append = FALSE, split = FALSE,
  .local_envir = parent.frame())
with_message_sink(new, code, append = FALSE)
local_message_sink(new, append = FALSE, .local_envir = parent.frame())

Arguments

new

[character(1)|connection] A writable connection or a character string naming the file to write to. Passing NULL will throw an error.

code

[any] Code to execute in the temporary environment

append

logical. If TRUE, output will be appended to file; otherwise, it will overwrite the contents of file.

split

logical: if TRUE, output will be sent to the new sink and to the current output stream, like the Unix program tee.

.local_envir

[environment] The environment to use for scoping.

Value

[any] The results of the evaluation of the code argument.

See Also

withr for examples

sink()